CN103073311A - Fast fill pouring material for working lining of swinging chute and preparation method of material thereof - Google Patents
Fast fill pouring material for working lining of swinging chute and preparation method of material thereof Download PDFInfo
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Abstract
The invention discloses a fast fill pouring material of a working lining of a swinging chute, and belongs to the technical field of fireproof materials. The fast fill pouring material includes the following components by mass percent: 15-30% of electrically fused mullite, 25-40% of corundum, 15-25% of silicon carbide powder, 5-10% of corundum powder, 4-6% of active alumina micro powder, 4-6% of quick dry binder and 0.04-0.08% of explosion-proof fiber. Compared with the prior art, the fast fill pouring material has the following advantages and benefits: a preparation method is simple and easy to realize; the fast fill pouring material is simple and convenient for construction; the drying time is short after the pouring operation; the fast fill pouring material can be quickly baked and quickly put into use; the one-time iron influx is more than 80,000 tons; and the fast fill pouring material has the characteristics of excellent explosion-proof performance, good slag-iron scour resistance, excellent corrosion resistance, good thermal shock stability, low comprehensive cost, high product benefit and the like, and can greatly shorten the construction and maintenance cycle, effectively increase the one-time iron influx of the working lining of the swinging chute and effectively prolong the service life of the working lining of the swinging chute.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly the refractory materials used of a kind of blast furnace oscillating chute working lining.
Background technology
When damage appears in blast furnace oscillating chute working lining, need to overlap and water repairing, repairing is carried out change chute after having gone out iron after, at first iron and slag remaining in the chute are cleaned out, then manually smear repairing, through the oscillating chute working lining after repairing, working lining increases work-ing life, the consumption of ton iron reduces, and chute work liner repairing can prolong the life-span of chute.Under the prior art, it mainly is to exempt to toast ramming mass and low cement deposit material that big-and-middle-sized blast furnace oscillating chute working lining is repaired anti-material, but these patching materials all can not reach its desirable service requirements.There is too short problem in work-ing life in ramming mass, and relatively closely knit because the ditch lining refractories of ramming generally is ditch basal surface one deck, poor with following position, top layer associativity, abrasion resistance is poor.Low cement deposit material is owing to needing maintenance after the construction, and the construction period time lengthening can not rapid drying and baking, the problem that impact is used.These materials'use life-spans are shorter in addition, after the repairing, owing to remaining in the mould material surface oxidation on working lining top layer, make and repair that one of formation is difficult to bonding closely knit interface between the bed of material and the former working lining, in use, molten iron can be penetrated into wherein gradually, after acquiring a certain degree, repair material can be peeled off by washing away of molten iron integral body, about ten thousand tons of general iron influx 4-5.Patching material work-ing life is short, and to cause the wobble groove working lining to repair too frequent.The reparation construction labor strength is large, and the environment of high heat causes again multiple unsafe factor, and frequent maintenance is repaired the oscillating chute working lining and caused quality more to be difficult to guarantee.Along with iron-smelting blast furnace to large scale development, also more and more higher with the requirement of refractory materials use properties to the oscillating chute working lining, present big-and-middle-sized oscillating chute working lining patching material generally uses the low cement deposit material of the Al2O3-SiC-C matter of high-quality, one time iron influx develops into ten thousand tons of 6-7 by ten thousand tons of initial 4-5, according to the impact of its processing parameter in the anti-material use procedure of oscillating chute working lining is thought: repair the erosion that mould material not only will stand high temperature sludge iron, the crackle of pour mass under the rapid heat cycle environment, bear the abrasion resistance of high temperature flowing molten iron, the also rapid construction of necessary raising work lining repair material, quick baking, the requirement such as come into operation fast.
Summary of the invention
Problem to be solved by this invention is:
1, solves blast furnace oscillating chute working lining and repair short problem of life-span;
2, solve existing blast furnace oscillating chute working lining reparation construction problem long in time limit.
As follows for addressing the above problem the solution of the present invention:
The fast teeming material feeding of a kind of oscillating chute working lining comprises by mass percentage: electrofused mullite 15～30%, corundum 25～40%, carborundum powder 15～25%, lapis amiridis 5～10%, Reactive alumina 4～6%, quick-drying wedding agent 4～6%; Explosion-proof fiber 0.04～0.08%.The particle diameter of each composition requires as follows: the granular size of electrofused mullite is 8～15mm; The granular size of corundum is 1～8mm; The granular size of carborundum powder is 0.088～1mm; The granular size of lapis amiridis is＜0.044mm; The granular size of Reactive alumina is＜5 μ m; The granular size of quick-drying wedding agent is＜0.088mm.Corundum is one or both in white fused alumina, brown corundum or the compact alumina.
Above-mentioned quick-drying wedding agent is comprised of 30～50% pure calcium aluminate cement, 20～30% silicon powder, 20～40% antioxidant, 5～10% quick dry agent, 1～3% water reducer by mass percentage.The oxygenant of quick-drying wedding agent is comprised of 30～80% Pure Silicon Metal, 20～70% norbide by mass percentage.The quick dry agent of quick-drying wedding agent is comprised of 30～60% metallic aluminium, 40～70% dextrin by mass percentage.The water reducer of quick-drying wedding agent is comprised of 20～50% tripoly phosphate sodium STPP, 10～40% FDN-A, 10～40% Sodium hexametaphosphate 99 by mass percentage.
The preparation method of the fast teeming material feeding of above-mentioned oscillating chute working lining is as follows:
S1, the quick-drying wedding agent is mixed in proportion, adopts dry powder technique to be prepared into powder mix;
S2, electrofused mullite, corundum, silicon-carbide particle prepared burden in proportion after, add in the mixing machine and mix;
S3, add in proportion explosion-proof fiber again and mix churning time 2-3 minute;
S4, the last quick-drying wedding agent powder mix that adds in proportion lapis amiridis, Reactive alumina and step S1 mix.
The present invention compared with prior art has the following advantages and beneficial effect:
1, this fast back pouring preparation method for material is simple, only needs the existing material of purchase to mix and gets final product, and is easy to realize;
2, this fast teeming material feeding easy construction, cast is short rear time of drying, can realize carrying out quick baking, comes into operation fast, has greatly shortened the construction period.
3, this fast teeming material feeding has good high temperature resistant, explosion-proof, scour resistance, and erosion-resisting characteristics is good, good thermal shock stability, and iron influx effectively prolongs oscillating chute working lining work-ing life and production safety more than 80,000 tons.
4, the blast furnace oscillating chute of being made by the fast teeming material feeding of the present invention; Material cost and labour cost reduce, thereby greatly reduce the integrated operation cost, have comprehensively improved economic benefit.
Embodiment
Embodiment 1
Preparation quick-drying wedding agent: get in mass ratio pure calcium aluminate cement 35%, silicon powder 20%, antioxidant 35%, quick dry agent 8%, water reducer 2% adopts dry powder to be total to grinding process and makes powder mix, and fineness of grinding should be all less than 0.088 ㎜ altogether; Wherein said antioxidant is comprised of the raw material of following mass ratio: metallic silicon power 80%, norbide 20%, wherein said quick dry agent is comprised of the raw material of following mass ratio: metallic aluminium powder 60%, DEXTRIN %, wherein said water reducer is comprised of the raw material of following mass ratio: tripoly phosphate sodium STPP 35%, FDN-A30%, Sodium hexametaphosphate 99 35%.
The preparation major ingredient: getting by mass percentage granularity is the electrofused mullite 15% of 8～15mm, Al2O3 content 75%; Granularity is the brown corundum 30% of 1～8mm, Al2O3 content 95%; Granularity is the compact alumina 10% of 1～3mm, Al2O3 content 99%; Granularity is the carborundum powder 25% of the content 98% of 0.088～1 ㎜, SiC; Granularity is less than the lapis amiridis 10% of 0.044mm, Al2O3 content 99%; Granularity is less than the Reactive alumina 4.94% of 1.2 μ m, Al2O3 content 99%; Quick-drying wedding agent 5%; Explosion-proof fiber 0.06%.
Add first in the mixing machine described electrofused mullite, corundum, silicon-carbide particle by mass percentage, the limit mixes, and the limit adds the explosion-proof fiber of pressing formula ratio, stirs 2-3 minute, press formula ratio and add lapis amiridis, carborundum powder, the mixing of active oxidation aluminium powder, mix 2-3 minute; Mixing in the moisture-proof packing bag of packing into after the fast teeming material feeding product weighing for preparing, deposit dry place ready for delivery after the sealing and use, deposit 3 months quality guaranteed perioves.
The fast teeming material feeding product cold crushing strength of this embodiment be 40MPa, heating permanent line change %(1500 ℃ * 3H)+0.32, strength at normal temperature is 6.8MPa, volume density 2.94g/cm3.
Embodiment 2
Preparation quick-drying wedding agent: get in mass ratio pure calcium aluminate cement 50%, silicon powder 20%, antioxidant 20%, quick dry agent 7%, water reducer 3% adopts dry powder to be total to grinding process and makes powder mix, and fineness of grinding should be all less than 0.088 ㎜ altogether; Wherein said antioxidant is comprised of the raw material of following mass ratio: metallic silicon power 65%, norbide 35%, wherein said quick dry agent is comprised of the raw material of following mass ratio: metallic aluminium powder 40%, dextrin 60%, wherein said water reducer is comprised of the raw material of following mass ratio: tripoly phosphate sodium STPP 50%, FDN-A40%, Sodium hexametaphosphate 99 10%.
Preparation major ingredient: get the electrofused mullite 23% that granularity is 8～15mm, Al2O3 content 74% by quality amount per-cent; Granularity is 1～8mm, the brown corundum 30% of Al2O3 content 95%, granularity are 1～3mm, the white fused alumina 7% of Al2O3 content 99%, granularity are 0.088～1 ㎜, and the silicon carbide 20% of the content 98% of sic, granularity are less than 0.044mm, and Al2O3 content 99% lapis amiridis 7.92%, granularity are less than 4 μ m; The active oxidation aluminium powder 6% of Al2O3 content 99%; Quick-drying wedding agent 6%; Explosion-proof fiber 0.08%.
Add first in the mixing machine described electrofused mullite, corundum, silicon-carbide particle by mass percentage, the limit mixes, and the limit adds the explosion-proof fiber of pressing formula ratio, stirs 2-3 minute, press formula ratio and add lapis amiridis, carborundum powder, the mixing of active oxidation aluminium powder, mix 2-3 minute; Mixing in the moisture-proof packing bag of packing into after the fast teeming material feeding product weighing for preparing, deposit dry place ready for delivery after the sealing and use, deposit 3 months quality guaranteed perioves.
The fast teeming material feeding product cold crushing strength of this embodiment be 37MPa, heating permanent line change %(1500 ℃ * 3H)+0.28, strength at normal temperature is 6.2MPa, volume density 2.92g/cm3.
Embodiment 3
Preparation quick-drying wedding agent: get in mass ratio pure calcium aluminate cement 30%, silicon powder 28%, antioxidant 31%, quick dry agent 10%, water reducer 1% adopts dry powder to be total to grinding process and makes powder mix, and fineness of grinding should be all less than 0.088 ㎜ altogether; Wherein said antioxidant is comprised of the raw material of following mass ratio: metallic silicon power 50%, norbide 50%, wherein said quick dry agent is comprised of the raw material of following mass ratio: metallic aluminium powder 30%, dextrin 70%, wherein said water reducer is comprised of the raw material of following mass ratio: tripoly phosphate sodium STPP 50%, FDN-A10%, Sodium hexametaphosphate 99 40%.
The preparation major ingredient: getting by mass percentage granularity is the electrofused mullite 30% of 8～15mm, Al2O3 content 70%; Granularity is the brown corundum 21% of 1～8mm, Al2O3 content 95%; Granularity is the white fused alumina 9% of 1～2mm, Al2O3 content 99%; Granularity is the carborundum powder 25% of the content 98% of 0.088～1 ㎜, sic; Granularity is less than the lapis amiridis 5% of 0.044mm, Al2O3 content 99%; Granularity is less than the Reactive alumina 4.95% of 1.2 μ m, Al2O3 content 99%; Quick-drying wedding agent 4%; Explosion-proof fiber 0.05%.
Add first in the mixing machine described electrofused mullite, corundum, silicon-carbide particle by mass percentage, the limit mixes, and the limit adds the explosion-proof fiber of pressing formula ratio, stirs 2-3 minute, press formula ratio and add lapis amiridis, carborundum powder, the mixing of active oxidation aluminium powder, mix 2-3 minute; Mixing in the moisture-proof packing bag of packing into after the fast teeming material feeding product weighing for preparing, deposit dry place ready for delivery after the sealing and use, deposit 3 months quality guaranteed perioves.
The fast teeming material feeding product cold crushing strength of this embodiment be 35MPa, heating permanent line change %(1500 ℃ * 3H)+0.36, strength at normal temperature is 6.1MPa, volume density 2.91g/cm3.
Embodiment 4
Preparation quick-drying wedding agent: get in mass ratio pure calcium aluminate cement 30%, silicon powder 22%, antioxidant 40%, quick dry agent 5%, water reducer 3% adopts dry powder to be total to grinding process and makes powder mix, and fineness of grinding should be all less than 0.088 ㎜ altogether; Wherein said antioxidant is comprised of the raw material of following mass ratio: metallic silicon power 40%, norbide 60%, wherein said quick dry agent is comprised of the raw material of following mass ratio: metallic aluminium powder 45%, dextrin 55%, wherein said water reducer is comprised of the raw material of following mass ratio: tripoly phosphate sodium STPP 20%, FDN-A40%, Sodium hexametaphosphate 99 40%.
The preparation major ingredient: getting by mass percentage granularity is the electrofused mullite 30% of 8～15mm, Al2O3 content 75%; Granularity is the white fused alumina 25% of 1～8mm, Al2O3 content 99%; Granularity is the carborundum powder 25% of the content 98% of 0.088～1 ㎜, sic; Granularity is less than the lapis amiridis 9.96% of 0.044mm, Al2O3 content 99%; Granularity is less than the Reactive alumina 4% of 1.2 μ m, Al2O3 content 99%; Quick-drying wedding agent 6%; Explosion-proof fiber 0.04%.
Described electrofused mullite, corundum, silicon-carbide particle add first in the mixing machine by mass percentage, the limit mixes, and the limit adds the explosion-proof fiber of pressing formula ratio, stirs 2-3 minute, press formula ratio and add lapis amiridis, carborundum powder, the mixing of active oxidation aluminium powder, mix 2-3 minute; Mixing in the moisture-proof packing bag of packing into after the fast teeming material feeding product weighing for preparing, deposit dry place ready for delivery after the sealing and use, deposit 3 months quality guaranteed perioves.
The fast teeming material feeding product cold crushing strength of this embodiment be 41MPa, heating permanent line change %(1500 ℃ * 3H)+0.33, strength at normal temperature is 6.3MPa, volume density 2.94g/cm3.
Embodiment 5
Preparation quick-drying wedding agent: get in mass ratio pure calcium aluminate cement 42%, silicon powder 22%, antioxidant 24%, quick dry agent 10%, water reducer 2% adopts dry powder to be total to grinding process and makes powder mix, and fineness of grinding should be all less than 0.088 ㎜ altogether; Wherein said antioxidant is comprised of the raw material of following mass ratio: metallic silicon power 30%, norbide 70%, wherein said quick dry agent is comprised of the raw material of following mass ratio: metallic aluminium powder 50%, dextrin 50%, wherein said water reducer is comprised of the raw material of following mass ratio: tripoly phosphate sodium STPP 40%, FDN-A30%, Sodium hexametaphosphate 99 30%.
The preparation major ingredient: getting by mass percentage granularity is the electrofused mullite 30% of 8～15mm, Al2O3 content 75%; Granularity is the compact alumina 37% of 1～8mm, Al2O3 content 99%; Granularity is the carborundum powder 15% of the content 98% of 0.088～1 ㎜, sic; Granularity is less than the lapis amiridis 6.94% of 0.044mm, Al2O3 content 99%; Granularity is less than the Reactive alumina 6% of 1.2 μ m, Al2O3 content 99%; Quick-drying wedding agent 5%; Explosion-proof fiber 0.06%.
Described electrofused mullite, corundum, silicon-carbide particle add first in the mixing machine by mass percentage, the limit mixes, and the limit adds the explosion-proof fiber of pressing formula ratio, stirs 2-3 minute, press formula ratio and add lapis amiridis, carborundum powder, the mixing of active oxidation aluminium powder, mix 2-3 minute; Mixing in the moisture-proof packing bag of packing into after the fast teeming material feeding product weighing for preparing, deposit dry place ready for delivery after the sealing and use, deposit 3 months quality guaranteed perioves.
The fast teeming material feeding product cold crushing strength of this embodiment be 37MPa, heating permanent line change %(1500 ℃ * 3H)+0.30, strength at normal temperature is 6.3MPa, volume density 2.95g/cm3.
Claims (8)
1. the fast teeming material feeding of oscillating chute working lining is characterized in that, this mould material is divided by mass percentage and comprised: electrofused mullite 15～30%, corundum 25～40%, carborundum powder 15～25%, lapis amiridis 5～10%, Reactive alumina 4～6%, quick-drying wedding agent 4～6%; Explosion-proof fiber 0.04～0.08%.
2. the fast teeming material feeding of oscillating chute working lining according to claim 1, it is characterized in that, described quick-drying wedding agent is comprised of 30～50% pure calcium aluminate cement, 20～30% silicon powder, 20～45% antioxidant, 3～5% quick dry agent, 0.5～2% water reducer by mass percentage.
3. the fast teeming material feeding of oscillating chute working lining according to claim 2 is characterized in that described antioxidant is comprised of 30～80% Pure Silicon Metal, 20～70% norbide by mass percentage.
4. the fast teeming material feeding of oscillating chute working lining according to claim 2 is characterized in that described quick dry agent is comprised of 30～80% metallic aluminium, 20～70% dextrin by mass percentage.
5. the fast teeming material feeding of oscillating chute working lining according to claim 2 is characterized in that, described water reducer is comprised of 20～50% tripoly phosphate sodium STPP, 10～40% FDN-A, 10～40% Sodium hexametaphosphate 99 by mass percentage.
6. the fast teeming material feeding of oscillating chute working lining according to claim 1 is characterized in that the granular size of described electrofused mullite is 8～15mm; The granular size of corundum is 1～8mm; The granular size of carborundum powder is 0.088～1mm; The granular size of lapis amiridis is＜0.044mm; The granular size of Reactive alumina is＜5 μ m; The granular size of quick-drying wedding agent is＜0.088mm.
7. the fast teeming material feeding of oscillating chute working lining according to claim 1 is characterized in that, described corundum is one or both in white fused alumina, brown corundum or the compact alumina.
8. the preparation method of the fast teeming material feeding of oscillating chute working lining according to claim 1 is as follows:
S1, the quick-drying wedding agent is mixed in proportion, adopts dry powder technique to be prepared into powder mix;
S2, electrofused mullite, corundum, silicon-carbide particle prepared burden in proportion after, add in the mixing machine and mix;
S3, add in proportion explosion-proof fiber again and mix churning time 2-3 minute;
S4, the last quick-drying wedding agent powder mix that adds in proportion lapis amiridis, Reactive alumina and step S1 mix.
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| CN103693977A (en) * | 2013-12-12 | 2014-04-02 | 东海县盛昌石英材料有限公司 | Regenerated pouring material used for swinging runner and prepared from waste slide plates and preparation method of regenerated pouring material |
| CN107200595A (en) * | 2017-07-19 | 2017-09-26 | 河南郑耐新材料有限公司 | One kind is exempted to toast material for repairing |
| CN107235713A (en) * | 2017-06-30 | 2017-10-10 | 长兴泓矿炉料有限公司 | A kind of cleek castable and preparation method thereof |
| CN108117401A (en) * | 2017-12-26 | 2018-06-05 | 河南欣昌耐材股份有限公司 | A kind of ladle permanent layer quick-drying gravity flow pouring material |
| CN108911764A (en) * | 2018-06-19 | 2018-11-30 | 佘春霞 | A kind of fast gravity die blast furnace crucibe repairing material |
| CN113149674A (en) * | 2021-05-31 | 2021-07-23 | 登封市宏源耐火材料有限公司 | Castable for copper discharge chute of anode furnace and preparation method thereof |
| CN113388706A (en) * | 2020-03-13 | 2021-09-14 | 中冶宝钢技术服务有限公司 | Composite repair method for blast furnace swinging spout |
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| CN108911764A (en) * | 2018-06-19 | 2018-11-30 | 佘春霞 | A kind of fast gravity die blast furnace crucibe repairing material |
| CN113388706A (en) * | 2020-03-13 | 2021-09-14 | 中冶宝钢技术服务有限公司 | Composite repair method for blast furnace swinging spout |
| CN113388706B (en) * | 2020-03-13 | 2022-11-01 | 中冶宝钢技术服务有限公司 | Composite repair method for blast furnace swinging chute nozzle |
| CN113149674A (en) * | 2021-05-31 | 2021-07-23 | 登封市宏源耐火材料有限公司 | Castable for copper discharge chute of anode furnace and preparation method thereof |
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